I finally managed a copy of road warriors. so let's confirm what order and where the ones I don't own fit in.

Red Reckoning (Braintburners)
Doom comes to Frogtown (Children o' the Atom)
Hell Riders (Road Warriors)
Dirty Laundry (The last Crusaders)
Land of the Cyber people (Cyborgs)
The boise horror
Air Force one is down (Denver)
Jihad (City of Sin)
unity.

Apocalypse now (Screen) comes first (I think)
Hell or High Water comes after Children o the Atom
Something about a sword comes before Boise Horror
Urban Renewal comes after Denver

The 3 dime novels (Killer Clowns, Infestation, and Leftovers) are the problem. The codes are different. I think I figured out the order, but now my harddrive went cuput. If you look at the locations that the adventures take place in, you can fit the Dime Novels in and get really close.

I finally managed a copy of road warriors. so let's confirm what order and where the ones I don't own fit in.

Red Reckoning (Braintburners)
Doom comes to Frogtown (Children o' the Atom)
Hell Riders (Road Warriors)
Dirty Laundry (The last Crusaders)
Land of the Cyber people (Cyborgs)
The boise horror
Air Force one is down (Denver)
Jihad (City of Sin)
unity.

I think the adventures from the AB books, and the Dime Novels, and Apocalypse Now can be played in any order, 'though you should play them before you take on the bigger adventures. Also check on what your posse can handle before you actually start running it.
(BTW: there is no adventure in the Cyborg book, Land of the Cyber people is just the Marshall section.)
A special mention goes to 'the Destroyer' (not 'Dirty Laundry', = the Marshall section) from The Last Crusaders. Since this can influence the posse's standing with the Templars this one should certainly be played before the other 'storyline' adventures. (In some ways this one's the first of the bigger story).
Something about the Sword also affects the Posse<=>Templar relationship, so that would be a good one to do either before or after the Detroyer. But it should be played before taking on the bigger adventures as well.
'Urban Renewal' should put the posse in good stead with Junkyard, which would be good to afterwards start The Boise Horror with. (They should also have a good relationship with the Templars through the Destroyer or Something ... .)
Air Force One is Down comes after The Boise Horror, which makes Urban Renewal come before it too, rather than after.
Jihad comes after Air Force One, and after that, the Unity.

As I see it, this is the way they should be run (or I'd run them):
1- 8 Most adventures not mentioned below. (Apocalypse Now, 3 Dime Novels, ... Frogtown, Red Reckoning, Hell Riders, Hell or High Water.)
9 - 10 The Destroyer/Something about a Sword.
11 Urban Renewal
12 The Boise Horror
13 Air Force One is Down
14 Jihad
15 The Unity _________________He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you.
— Friedrich Nietzsche, Beyond Good and Evil